“The flammable substance appears to have ignited inside the building, burned some furniture and damaged the building’s interior before going out,” police told WNCN. “The substance was housed in a bottle thrown through one of the building’s front windows.”

A building next to the GOP office was spray-painted with the threatening message and a swastika. It was discovered early Sunday morning by a local business owner.

Dallas Woodhouse, executive director of the North Carolina Republican Party, called the vandalism a “hate crime.”

“Whether you are Republican, Democrat, or Independent, all Americans should be outraged by this hate-filled and violent attack against our democracy,” said Woodhouse. “Whether the bomb was meant to kill, destroy property, or intimidate voters, everyone in this country should be free to express their political viewpoints without fear for their own safety. We will be requesting additional security at all Republican Party offices and events between now and Election Day to ensure the safety of our activists, volunteers, and supporters.”

N.C. Governor Pat McCrory also released a statement Sunday afternoon in which he vowed to make solving the firebombing a priority of his office.

“The firebombing of a local political headquarters in Orange County is clearly an attack on our democracy,” said McCrory, a Republican. “Violence has no place in our society – but especially in our elections. Fortunately no one was injured; however, I will use every resource as governor to assist local authorities in this investigation.”

Democratic officials also denounced the incident, calling it an “attack,” with a statement Sunday afternoon.

“The North Carolina Democratic Party strongly condemns this attack. Violence has no place in our political system. We hope the perpetrators of this attack are brought to swift justice, and we are thankful that no one was hurt. Our deepest sympathies are with everyone at the North Carolina Republican Party,” said North Carolina Democratic Party Chairwoman Patsy Keever.

NCDP strongly condemns the attack on the Orange County GOP HQ. Violence has no place in our political system. pic.twitter.com/EHBWTab0CO

Anyone with information is asked to contact Investigator Jon Purvis by email or by phone at 919-732-9381, ext. 37.

Tips can also be left anonymously through the town’s website or by calling the Hillsborough Police Department’s tip line at 919-732-3975. The phone line is routed directly to voicemail and does not record callers’ phone numbers, police said.